Booster-motor truck



1927. Sept H. M. PFLAGER BOOSTER MOTOR TRUCK Filed July 25, 1925 hwy/7Pa Sept. so, 1927.

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o timum filed Early 25, 1925. Serial no. sense.

My invention relates to railroad rolling Stock ando nfiists in animproved truck construction, especiall adapted for use on .boostenmotortrue and in the combination of a booster motor with the truck. Thisapplication is a continuation in partof my eopendin'g application SerialNo. 640,637, filed May 22, 1-923. I

The main object of my invention is to pro vide a truck having more thanone pair of ,yvheels which is normally an ordinary carrying a .deadweight which is ordinarily equallv distributed to all of the truckwheels but which, under certain conditions, will be distributedunequally to the wheels, in other words, all of the truck wheels will Ishare the .ordinery loed but when theboostcr motor is operating, theWheels which it drives will receive a greater portion of the 10 ,thembymaking them more ellicient as driv ng wheels. z

An'advantageous application of my invention may be made to the trucks ofa locomo tiveftnder which are normally load currying trucks only. Iapply my booster motor ,to one axle of such a truck, preferably therear. axle, so that the motor can be used for assisting the locomotivein starting heavy trains or in moving up steep grades.

In the accompanying drawings which illustrate a selected embodiment ofmy int em 'Figured is a top view of one-hell of s truck, it beingunderstood that the other half is a duplicate of that shogvn.

Figure 9 is a side elevation ofthe truck.

Figures 3 and 4 are transverse vertica sections taken on line 3-3 andll, respectively; of Figure 1.

In-Figures 3 and 4 parts of the tender body are indicated in dot anddash lines simply for the purpose of illustrating the relative positionof the body and truck. it

will be understood that the body forms no part of the present invention.

The truckshown is s. four-wheel truck having wheels 1, axles 2 and 3 andjournal boxes 4 and 5, respectively, of any ordinary type. The'load iscarried by the journal boxes through equalizers 6 and 7. Equal izer 6has one end resting upon journal b0 4 and it extends therefrom towardjournal box 5 but does not engage the latter. Journsl box 5 supportsequalizer 7 intermediate the ends or the latter, one of which ends isconnected at 8 to the adjacent end of equalizer 6 and the other of whichcarries a spring seat 10. Similar spring seats 11 and 12 are carried byequalizer 6 and preferably these seats are nearer to axle 2 than to axle3.

Spring means here shown as coil springs 13, are mounted upon eachspring'seat and it will be understood that these springs may be of thetype shown or of leaf type and arranged in groups or singly, as desired."'lb i by springs 13 is the truck frame, iown a one-piece casting,including a wheel 14, a bolster 15, an end transom l5, perlestns 17, avehicle body supporting center plate 18, side bearings 19, and springcaps 20 and 21. It will be noted that the bolster l5 and center plate 18are located intermediate of spring seats 11 and 12, and nearer to axle 2than to axle 3, thereby distributing the major portion of the weight ofthe vehicle body to journal boxes 4 and 5 through equalizer 6 and theadjacent half er '7 while the remaining portion lit is transmitted alongthe wheel it through spring; cap 21 to spring sent 10 and the other halfof equalizer 7.

i i. booster motor is indicated at 22, with its frame mainly supportedby endtransom 16, but partially supported by axle 3 to which the boostermotor is operatively connected iiizinnen The end transom. 16 is o'n'into at the longitudinal I y of the motor; hence very ried directlyby axle The arrangement or the equalizers, proportions of iheirlengths,and location of the body support 18 and transom 16 are such that thecombined deed Weights of the body and motor are normally equally dividedbetween the two axles 3 and l.

Although the dead weights of the body and of the booster motor aretransmitted equally iotbe axles, when the booster motor operaling therelation between the members supporting it and the members resisting itsthrust is such that the torque will have the effect. of adding weight tothe driver mile, which weight is of course, taken from the other axlethrough the equalizing system and the truck frame will hear more heavilyon the springs nearest the motor. This increases the weight on thedriving wheels and increases their adhesion to the rail which, ofcourse, is desirable when they are-acting as driving wheels. a

Figure 4 shows that the equalizers are formed in airs and that the wheelpiece 14 of the true frame is positioned partl between the correspondingpairs of equalizers. This construction is of course optional as well asthe provision of the frame by means of an integral castin and variousmodifications of these and 0t er details of the structure shown may bemade without departin from the spirit of my invention as expresser inthe appended claims.

I claim:

1. In a truck, axles, equalizers supported thereon, a. truck framesupported on said equalizers, a superstructure support element on saidtruck frame between said axles, and a motor frame supported near itslongitudinal centerof gravity on one end of said truck frame beyond thenearest axle.

2. In a truck, spaced axles, equalizers mounted thereon, a bodysupportintruck frame carried by. said equalizers, a ooster motor located outsideof said axles and mounted on said frame and one of said axles, thepoints of support of body and booster moto load on said frame being soarranged that the weight supported by the frame is substantially equa lydistributed to said axles.

3. In a truck, spaced axles, a truck frame carried thereby, asuperstructure support element on said truck frame between said axles, abooster motor outside of said axles and mounted on said frame and one ofsaid axles, said element and motor being so positioned on saidframe-relatively to said axles that the combined weight of the bodysupported by said elements'and the dead wei 'ht of said booster motor issubstantially equa ly distributed to said axles.

4. In a truck, spaced axles, equalizers mountcd thereon, a truck framecarried by said equalizers, a booster motor mounted on said frame andone of said axles, a superstructure supporting element on said truckframe. said motor frame, equalizers and element being so arranged thatthe dead weight of body and booster motor is substantially equallydistributed toboth of said axles but that the operation of said boostermotor increases the proportion of weight on the axle connected thereto.

5. In a truck, spaced axles, equalizers mounted thereon, a truck framecarried by said e ualizers and supported thereon at points ocatedbetween said axles and beyond one of them respectively, nd a boostermotor supported by said frame at a point beyond neaaaeo the outer framesupporting points on said equalizers.

6. In a truck, spaced axles, a frame supported on both of said axles andprojecting beyond one of them, a motor mounted on the projecting portionof said frame and on the adjacent axle, the frame mounting of said motorbeing substantially beneath the center of gravity of said motor.

7. In a truck, two axles, an equalizer-supported on one axle andextending toward the other axle, an equalizer supported on the otheraxle and extending in both directions therefrom, one extensionsupporting. an end of said first-mentioned equalizer, and a truck framemounted on said first mentioned equalizer and on the other extension ofsaid second-mentioned equalizer.

8. In a truck, two axles, an equalizer supported on one axle andextending toward the other axle, an equalizer supported on the otheraxle and extending in both directions therefrom, one extensionsupporting an end of said first-mentioned e ualizer, a truck framemounted on sai first-mentioned equalizer and on the other extension ofsaid second-mentioned equalizer, and a booster motor carried upon saidframe at a point beyond said frame support.

9. In a truck, two axles, an equalizer supported on one-axle andextending toward the other axle, an equalizer supported on the otheraxle and extending in both directions therefrom, one extensionsupporting an end of said first-mentioned equalizer, sprin means seatedon said first-mentioned equa izer, spring means seated on the otherextension of said second-mentioned equalizer, and a truck frame suported on all of said means and having a oad supporting point over saidfirst-mentioned spring means.

10. In a. truck, two axles, an equalizer supported by one axle andextending toward the other axle, an equalizer supported on the otheraxle and extending in both directions therefrom, one extensionsupporting an end of said first-mentioned equalizer, spring meansseated-on said first-mentioned equal izer, spring means seated on theother extension of said second-mentioned equalizer, and

a truck frame supported on all of said means and having load supportingpoints over said firstmentioned spring means and beyond saidsecond-mentioned spring means.

11. In a truck. two axles, an equalizer supported on one axle andextending toward the other axle, an equalizer supported on the otheraxle an'dextending in both directions therefrom. onekextensionsupporting an end of said first-mentioned equalizer, spring means seatedon said first-mentioned equalizer, spring means seated on the otherextension of said second-mentioned equalizer, and a truck framesupported on all of said means and having a car body supporting centerplate over said first-mentioned means and a booster motor support beyondsaid secmulonentioned means.

. 12.In a truck, twoaxles, an equalizersupported on one-axle andextending toward the other axle, an equalizer supported on the otheraxle and extending in both directions therefrom, one extensionsupporting an end of said first-mentioned equalizer, spring means seatedon said first-mentioned equalizer, spring means seated on the otherextenvsion of said second-mentioned equalizer, and a onepiece cast truckframe sup orted on all of said means and having loa supporting ointsover said lirstrmentioned means and eyond said second-mentioned means.

13. In a truck, spaced axles, equalizers mounted thereon, a truck framecarried by said equalizers and supported thereby at points locatedbetween said axles nearer one of said axles than the other and at pointsbeyond the latter axle.

14. In a truck, spaced axles, equalizers mounted thereon, a truck framecarried by said equalizers and supported thereby at points locatedbetween said axles nearer one of said axles than the other and at pointsbeyond the latter axle, and a booster motor supported by said frame at apoint beyond the outer frame supporting point on said equalizers.

15. In a truck, twoaxles, an equalizer supported on axle and extendingtoward the other axle, an equalizer supported on the other axle andvextending in both directions therefrom, one extension supporting an endof said lirst-mentioned equalizer, and a truck frame mounted on saidfirst-mentioned equalizer and on the other extension of saidsecond-mentioned equalizer and provided nith a body supporting bearingnearcr to said iirst-iuentioned axle and with a motor sup 'iortingbearing beyond the other of said axles.

16. In a truck. two axles. an equalizer upported on one axle andextending toward the other axle, an equalizer supported on the otheraxle and extending in both directions then-from. one extensionsupporting an nd of said firstonentioned equalizer, and a truck framemounted on said first-mentioned equalizer and on the other extension ofsaid second-mentioned equalizer and provided with a body supportinghearing nearor to said lirst'mentioned axle and with a motor sup ortitngbearin beyond the other of said ax es and below t e level of the adjaoent truck support.

17. In a truck, two axles, an equalizer supported on one axle andextending toward the other axle, an equalizer supported on th other axleand extending in both directions therefrom, one extensionsupporting anend of said first-mentioned equalizer, spring means seated on saidfirst-mentioned equalizer, spring means seated on the other extension ofsaid second-mentioned equalizer, and a truck frame supported on allrofsaid means and having a load supporting point over said first-mentionedspring means and 10- i;

cated nearer to said first-mentioned axle than to said other axle.

18. In a truck spaced axles, a truck frame carried by sai axles andsupported at points located between said axles and at points beyond oneof them, and a booster motor supported by said frame at a point beyondthe outer frame support.

19. A locomotive booster apparatus comrising in combination, a truckframe hav-- mg a plurality of wheel axles, a pair of weight distributinglevers resting upon and straddling the opposite ends of one axle, asecond pair of weight distributing levers resting at one end upon theopposite ends of another axleand extending toward the near ends of saidfirst levers to which they are 'pivotally connected, and an auxiliarymotor adapted to drive the axle which is straddied by the first pair oflovers supported in part at least on'the frame and arranged so that itsoperatin torque will act through the weight distributing" lovers tothrow a greater proportion of the load on the driven axle than on saidother axle.

20. A locomotive booster ap aratus comirising in combination, a trucliframe havin a plurality of wheel axles, weight distri uting structurecomprising pairs of levers pivoted together and carried on the axles,means for transmitting the load from the frame to the axles through saidweight distributing structure, and an auxiliary motor adapted to driveone of the axles, the torque of the motor when driving acting on thedistributing structure to increase the load on the driven axle.

In testimony whereof I hereunto afiix my signature this 21st day ofJuly, 1925.

H. M. PFLAGER.

